The fatal acts of violence that led to their deaths changed the lives of their friends and families forever.
We are once again sharing the details of these cases in a bid to ensure each murder victim is never forgotten; and to also keep the circumstances of their deaths fresh in case someone out there could help to finally bring their killers to justice, drawing an awful chapter in the lives of grieving loved ones to a close.
Among them is 21-year-old Kavan Brissett, who was stabbed to death in a targeted attack when violence flared off Langsett Walk, Upperthorpe, in August 2022.
Other cases included are that of Sheffield mum, Michaela Hague, aged 25, who was knifed in her back and neck in a frenzied attack on Bonfire Night 2001 and James Kamara who was shot dead in a drive-by shooting in Brunswick Street, Broomhall, Sheffield in 2009.
If you think you have any information which may help South Yorkshire Police please call the force on 101.
13. Michael Baxendale: Nightclub manager suffered fatal stab wounds in attack outside club
Michael Baxendale suffered multiple stab wounds in an attack outside Niche on Sydney Street in Sheffield city centre in October 1998. The 48-year-old was the manager of the famous club, which was owned by his brother Steve at the time of the stabbing. He and two bouncers were both injured in the knife attack, with Michael, a dad-of-two, suffering multiple stab wounds. The attack took place at 8am on Sunday, October 11, when Niche was a major name on the UK’s all nighter club scene. Detectives who investigated the attack said bricks and bottles were found at the crime scene as well as multiple pools of blood. There were hundreds of clubbers at the venue but witnesses failed to come forward in numbers. One of the theories investigated as part of the police probe into the murder was that a group from Manchester, who had been thrown out of the club earlier in the night, could have been involved. Arrests were made but nobody was ever charged. Photo: SYP
14. Patricia Grainger: Mum-of-one's body found under discarded base at brook behind homes
Patricia Grainger's body was found dumped under a discarded base at a brook behind homes on Deerlands Avenue, Parson Cross in August 1997. The mum-of-one, who was 25 and had learning difficulties, was from nearby Buchanan Road and had not been seen for a number of days before her body was found by children playing in the brook. She was semi-naked and had been stabbed, strangled and sexually assaulted. Her son, Danny, has been campaigning for police action over the murder for years. Photo: SYP
15. George Andrew Bentley: Man shot dead at Sheffield pizza restaurant
He was shot dead in a gun attack at the Flying Pizza restaurant on Glossop Road in Sheffield city centre in 1996. Photo: SYP